Let's describe it in this fashion. When he's facing Crota, he TELLS Crota when to kneel!

In the shipyard at the Cosmodrone, there once lurked a myth. He may have looked like a one shot level 8 vandall. Bang !! Oh shit he now has your round stuck in his teeth and he's pissed.

The unholy spawn of satan and the queen of the fallen. He is a single vandal major who has triumphed over many a guardian. Putting the kill count of the blade of Crota to shame. He laughs at sniper headshots and rockets. If you triumph over him he may give you 20 glimmer. He sometimes lurks around the forgotten shores on earth, looking for young guardians to shame